This analysis will evaluate the effects of the natural gas composition on the formation of hydrate for the purpose of storage and transporting natural gas. Results show that the composition of the natural gas can affect the temperature and pressure required for formation of the hydrate. Carbon dioxide, hydrogen sulfide and nitrogen impurities in natural gas affect the hydrate formation and may result in additional processing of the gas is required hydrate formation. The composition of the sample also affects the water to gas mole ratio and hence the amount of water required for hydrate formation.
{"title":"The Natural Gas Composition is Key in Hydrate Formation","authors":"J. Rajnauth","doi":"10.3968/10887","DOIUrl":"https://doi.org/10.3968/10887","url":null,"abstract":"This analysis will evaluate the effects of the natural gas composition on the formation of hydrate for the purpose of storage and transporting natural gas. Results show that the composition of the natural gas can affect the temperature and pressure required for formation of the hydrate. Carbon dioxide, hydrogen sulfide and nitrogen impurities in natural gas affect the hydrate formation and may result in additional processing of the gas is required hydrate formation. The composition of the sample also affects the water to gas mole ratio and hence the amount of water required for hydrate formation.","PeriodicalId":313367,"journal":{"name":"Advances in Petroleum Exploration and Development","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123660347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Drilling tool is a necessary tool in oil drilling engineering, its performance directly affects the penetration rate of drilling engineering, to a well, reasonable selection of drilling tools will be conductive to high-quality, efficient and fast drilling construction. Reasonable optimization of drilling tools, based on the field testing of drilling tools in use, and according to the results of field testing, correctly guide the selection of drilling tools. According to the different drilling conditions, the drilling tools should be reasonably allocated to match the drilling performance with the drilling conditions. Analyze the problems and causes of drilling tools found in testing, and determine the rational solutions and preventive measures. The abrasion and thinning of drilling tools often occurs in the drilling process of oil and gas, which affects the bearing capacity of drilling tools. Tensile load is one of the main load-bearing modes of drilling tools and an important evaluation index of drilling tool safety. By simplifying the drilling tool model, confirm the tensile strength of the wearing drilling tool and the stress state at different well depths, and reach the relationship between the wearing degree of drilling tool and the safe well depth.
{"title":"Study on the Affection of Drilling Tools’ Abrasion to the Regular Pattern of Tensile Strength","authors":"Z. Li","doi":"10.3968/10997","DOIUrl":"https://doi.org/10.3968/10997","url":null,"abstract":"Drilling tool is a necessary tool in oil drilling engineering, its performance directly affects the penetration rate of drilling engineering, to a well, reasonable selection of drilling tools will be conductive to high-quality, efficient and fast drilling construction. Reasonable optimization of drilling tools, based on the field testing of drilling tools in use, and according to the results of field testing, correctly guide the selection of drilling tools. According to the different drilling conditions, the drilling tools should be reasonably allocated to match the drilling performance with the drilling conditions. Analyze the problems and causes of drilling tools found in testing, and determine the rational solutions and preventive measures. The abrasion and thinning of drilling tools often occurs in the drilling process of oil and gas, which affects the bearing capacity of drilling tools. Tensile load is one of the main load-bearing modes of drilling tools and an important evaluation index of drilling tool safety. By simplifying the drilling tool model, confirm the tensile strength of the wearing drilling tool and the stress state at different well depths, and reach the relationship between the wearing degree of drilling tool and the safe well depth.","PeriodicalId":313367,"journal":{"name":"Advances in Petroleum Exploration and Development","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116257589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Based on the study of the igneous rocks of X structure, Bohai Bay Basin, the seismic response characteristics of the igneous facies in the entire area were described and summarized. Aimed at the special seismic response characteristics of the igneous rock in the study area, based on the three types of traditional eruption patterns, a new type of volcanic eruption pattern, annular eruption pattern, was propose for the first time. Annular eruption pattern meant that the volcanic conduit represented zonal distribution in the plane. The characteristics of annular eruption pattern and its impact on hydrocarbon accumulation were fully demonstrated. Annular eruption pattern was firstly proposed in the study field of igneous rocks, which can effectively guide the analysis of the risk and potential of the oil field.
{"title":"Analysis of Seismic Response Characteristics of Cenozoic Igneous Facies and Hypothesis of Annular Eruption Pattern, Bohai Area-A Case Study","authors":"Haojie Liu, Xuefeng Zhou, Fuqiang Li, Jiuan Xie","doi":"10.3968/10750","DOIUrl":"https://doi.org/10.3968/10750","url":null,"abstract":"Based on the study of the igneous rocks of X structure, Bohai Bay Basin, the seismic response characteristics of the igneous facies in the entire area were described and summarized. Aimed at the special seismic response characteristics of the igneous rock in the study area, based on the three types of traditional eruption patterns, a new type of volcanic eruption pattern, annular eruption pattern, was propose for the first time. Annular eruption pattern meant that the volcanic conduit represented zonal distribution in the plane. The characteristics of annular eruption pattern and its impact on hydrocarbon accumulation were fully demonstrated. Annular eruption pattern was firstly proposed in the study field of igneous rocks, which can effectively guide the analysis of the risk and potential of the oil field.","PeriodicalId":313367,"journal":{"name":"Advances in Petroleum Exploration and Development","volume":"115 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116641150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shen Guo, Yuwen Liu, Yongqiang Pan, Dandan Yu, Qingxin Song
A study of the treatment of heavy oil wastewater was carried out using the combined process of dissolved air flotation-sedimentation- biological contact oxidation - ultra-filtration membrane. When hydraulic retention times (HRT) was 18h, removal rates of COD, oil and suspended substance (SS) approached at 73~75%, 98%~99% and 100%, respectively. The diversity of bacterias was increased after air flotation, the betaproteobacteria dominated after enriched bacterias of BW-1， BW-2， BW-3，WSW-4,1-2-1 and 3-2-1 were added to contact oxidation tank. The combined process provided a suitable process in dealing with the complex heavy oil wastewater.
{"title":"Performance of Combined Process of Air Flotation- Sedimentation - Biological Contact Oxidation - Membrane Biological Reactor Treating Heavy Oil Wastewater","authors":"Shen Guo, Yuwen Liu, Yongqiang Pan, Dandan Yu, Qingxin Song","doi":"10.3968/10894","DOIUrl":"https://doi.org/10.3968/10894","url":null,"abstract":"A study of the treatment of heavy oil wastewater was carried out using the combined process of dissolved air flotation-sedimentation- biological contact oxidation - ultra-filtration membrane. When hydraulic retention times (HRT) was 18h, removal rates of COD, oil and suspended substance (SS) approached at 73~75%, 98%~99% and 100%, respectively. The diversity of bacterias was increased after air flotation, the betaproteobacteria dominated after enriched bacterias of BW-1， BW-2， BW-3，WSW-4,1-2-1 and 3-2-1 were added to contact oxidation tank. The combined process provided a suitable process in dealing with the complex heavy oil wastewater.","PeriodicalId":313367,"journal":{"name":"Advances in Petroleum Exploration and Development","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128399085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Guodong Ji, Haige Wang, L. Liu, Siqi Li, L. Sun, Zihe Chen
Impact frequency of drill tools, vibration displacement of rock and other factors play a key role on the impact efficiency of vibration and rock breaking effect in the percussion drilling. In this paper, the micro vibration equation of rock in the impact of indenter was established based on the principle of least action. Then the relationship among vibration displacement of rock and quality and natural frequency of rock, impact force and impact frequency of indenter and time were analyzed. The results show that the curve of vibration displacement is kind of shape of cosine function, its size fluctuates up and down in the equilibrium position with the changes in various factors; The greater the impact of flat indenter is, The smaller the quality of rock is, the greater the vibration displacement of rock is; The closer the impact frequency of indenter and natural frequency of rock are, the greater the vibration amplitude of rock is, and it is significantly higher than the situation which the difference of impact frequency of indenter and natural frequency of rock is large.
{"title":"The Micro Vibration Equation of Rock and Its Analysis in Flat Indenter Basing on the Principle of Least Action","authors":"Guodong Ji, Haige Wang, L. Liu, Siqi Li, L. Sun, Zihe Chen","doi":"10.3968/10681","DOIUrl":"https://doi.org/10.3968/10681","url":null,"abstract":"Impact frequency of drill tools, vibration displacement of rock and other factors play a key role on the impact efficiency of vibration and rock breaking effect in the percussion drilling. In this paper, the micro vibration equation of rock in the impact of indenter was established based on the principle of least action. Then the relationship among vibration displacement of rock and quality and natural frequency of rock, impact force and impact frequency of indenter and time were analyzed. The results show that the curve of vibration displacement is kind of shape of cosine function, its size fluctuates up and down in the equilibrium position with the changes in various factors; The greater the impact of flat indenter is, The smaller the quality of rock is, the greater the vibration displacement of rock is; The closer the impact frequency of indenter and natural frequency of rock are, the greater the vibration amplitude of rock is, and it is significantly higher than the situation which the difference of impact frequency of indenter and natural frequency of rock is large.","PeriodicalId":313367,"journal":{"name":"Advances in Petroleum Exploration and Development","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127932201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The well Xin 123- Ping 80 is a development horizontal well located in XinZhao Oilfield of the NO.9 oil production plant of the PI5 layer. The original design of the well uses single arc section with a full angular rate of change of 8.47°/30 m. The wellbore orbit optimization technology is used in the field construction, and the design is optimized to the vertical well section by the computer software - the first build and hold wellbore - the second build section - the oil detection and landing - the horizontal section seven-section track profile, the full-angle change rate is optimized to 7°~8°/30m, and the 1.25° single-bend screw LWD measurement system is used in conjunction with the construction. The self-orientation of the inclined angle starts to enter the inversion hole assembly, using directional drilling and composite drilling. In a combined manner, a drilling construction is realized, the mechanical drilling speed of the inclined section and the horizontal section is improved, the drilling cycle is shortened, and the comprehensive drilling cost is saved. The successful implementation of this well has provided useful reference for such horizontal well construction, and accumulated valuable experience, which has important guiding significance to shorten the drilling period of horizontal well in Daqing oilfield and popularize the application of horizontal well technology.
{"title":"The Practice on Accelerating the Horizontal Well of the Xin 123-Ping 80","authors":"Y. Jia","doi":"10.3968/10541","DOIUrl":"https://doi.org/10.3968/10541","url":null,"abstract":"The well Xin 123- Ping 80 is a development horizontal well located in XinZhao Oilfield of the NO.9 oil production plant of the PI5 layer. The original design of the well uses single arc section with a full angular rate of change of 8.47°/30 m. The wellbore orbit optimization technology is used in the field construction, and the design is optimized to the vertical well section by the computer software - the first build and hold wellbore - the second build section - the oil detection and landing - the horizontal section seven-section track profile, the full-angle change rate is optimized to 7°~8°/30m, and the 1.25° single-bend screw LWD measurement system is used in conjunction with the construction. The self-orientation of the inclined angle starts to enter the inversion hole assembly, using directional drilling and composite drilling. In a combined manner, a drilling construction is realized, the mechanical drilling speed of the inclined section and the horizontal section is improved, the drilling cycle is shortened, and the comprehensive drilling cost is saved. The successful implementation of this well has provided useful reference for such horizontal well construction, and accumulated valuable experience, which has important guiding significance to shorten the drilling period of horizontal well in Daqing oilfield and popularize the application of horizontal well technology.","PeriodicalId":313367,"journal":{"name":"Advances in Petroleum Exploration and Development","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131714410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiaonan Li, Changqing Liu, Qing Feng, Ming Zeng, Zijun Huang
As one effective mean of obtaining CBM parameters, injection/falling off well-test also has abnormal results. This paper studies process parameters’ optimization such as injecting pressure, injecting volume, shut-in time and reservoir closure pressure, which will insure test procedure and results’ reliability. In order to avoid ambiguity of well-test results it studies fluid and reservoir parameters’ impacts on well-test interpretation results, and determines the range of parameters’ value such as compression co-efficient, fluid viscosity and so on. The results prove that injection parameters’ design affects field test success, determines whether test data truly reflect reservoir information or not, and its values may affect the accuracy of well-test interpretation. This paper’s study will play an important role on solving injection/falling off well-test abnormal problems.
{"title":"CBM Injection/Falling Off Well-Test Parameters' Optimization and Study in the Middle of Qinshui Basin, China","authors":"Xiaonan Li, Changqing Liu, Qing Feng, Ming Zeng, Zijun Huang","doi":"10.3968/10106","DOIUrl":"https://doi.org/10.3968/10106","url":null,"abstract":"As one effective mean of obtaining CBM parameters, injection/falling off well-test also has abnormal results. This paper studies process parameters’ optimization such as injecting pressure, injecting volume, shut-in time and reservoir closure pressure, which will insure test procedure and results’ reliability. In order to avoid ambiguity of well-test results it studies fluid and reservoir parameters’ impacts on well-test interpretation results, and determines the range of parameters’ value such as compression co-efficient, fluid viscosity and so on. The results prove that injection parameters’ design affects field test success, determines whether test data truly reflect reservoir information or not, and its values may affect the accuracy of well-test interpretation. This paper’s study will play an important role on solving injection/falling off well-test abnormal problems.","PeriodicalId":313367,"journal":{"name":"Advances in Petroleum Exploration and Development","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132901183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Accurate prediction of well productivity is important to take proper engineering measures, and it has an important value on the increased cost of oil and gas exploration and development. Variety of different reservoir evaluation methods for well productivity based on different data, such as seismic data, mud logging data, well logging data, well testing data, formation test data etc. was compared in this paper, and the scale, scope and implications of the methods evaluation were also described. This provides a theoretical basis for comprehensive reservoir productivity assessment research, and can be a guidance for comprehensive evaluation of reservoir productivity based on variety of test data.
{"title":"Comparison of Oil Well Productivity Evaluation Methods Based on Different Data","authors":"Qin Zhu, Dong Liu, Dayong Cheng, Xinran Wang, Xiaolin Zhu","doi":"10.3968/10608","DOIUrl":"https://doi.org/10.3968/10608","url":null,"abstract":"Accurate prediction of well productivity is important to take proper engineering measures, and it has an important value on the increased cost of oil and gas exploration and development. Variety of different reservoir evaluation methods for well productivity based on different data, such as seismic data, mud logging data, well logging data, well testing data, formation test data etc. was compared in this paper, and the scale, scope and implications of the methods evaluation were also described. This provides a theoretical basis for comprehensive reservoir productivity assessment research, and can be a guidance for comprehensive evaluation of reservoir productivity based on variety of test data.","PeriodicalId":313367,"journal":{"name":"Advances in Petroleum Exploration and Development","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126108025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Block 69 in Yemen is characterized by several poor oil forming conditions, such as being low in trap confirmation and poor reservoir quality etc.. Though three wells have been drilled, no commercial hydrocarbon discovery has been made, showing the great difficulties for oil and gas exploration in the block. The author, on the basis of analyzing the oil and gas accumulation conditions, has performed trap conformation in the block and carried out trap resources estimation and geologic risk assessment, thus suggested that the Prospect-1 trap is the most favorable drilling target in the future.
{"title":"The Resource Estimation and Geologic Risk Assessment for the Southern Structure Belt in Block 69, Yemen","authors":"Zhixia Song","doi":"10.3968/10089","DOIUrl":"https://doi.org/10.3968/10089","url":null,"abstract":"Block 69 in Yemen is characterized by several poor oil forming conditions, such as being low in trap confirmation and poor reservoir quality etc.. Though three wells have been drilled, no commercial hydrocarbon discovery has been made, showing the great difficulties for oil and gas exploration in the block. The author, on the basis of analyzing the oil and gas accumulation conditions, has performed trap conformation in the block and carried out trap resources estimation and geologic risk assessment, thus suggested that the Prospect-1 trap is the most favorable drilling target in the future.","PeriodicalId":313367,"journal":{"name":"Advances in Petroleum Exploration and Development","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125513587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Depletion performance of combination drive oil reservoirs is highly influenced by changes in reservoir rock and fluid data, relative permeability data, and PVT data of reservoir. Therefore, future prediction of combination drive oil reservoirs is difficult due to the long terms, huge equations and the sensitivity of data especially the PVT data and relative permeability data. In this paper, an integrated analytical model was developed to simulate the combination drive oil reservoir’s performance. It couples the general material balance equation with equations for water influx, water-invaded pore volume, gas-invaded pore volume, oil and gas saturation, and fluid contacts for combination oil reservoirs. All these equations are merged and solved simultaneously with reservoir depletion stages. A comparison with the various equations’ results for the integrated model has been developed so that it can be utilized in history match mode. This is used to estimate fluid saturation distribution after water influx and gas-cap invasion, original fluids in place, aquifer parameters and type, fluid contact levels, and effective recovery factor during gas and water aquifer movement towards the productive hydrocarbon zone in all reservoir depletion stages. The developed model has been validated using published cases for various oil reservoirs’ conditions, resulting in a good match between published case results and developed model results for these reservoirs. After validating the model, it has been used for two Egyptian combination drive fields. The field production history has been matched and future production performance for these reservoirs was simulated. Finally, the developed model also has the capability to predict reservoir performance for another Egyptian combination drive oil reservoir field under water and or gas injection, integrated with decline curve analysis.
{"title":"Prediction Modeling for Combination Drive Reservoir Performance","authors":"Hala I. Mohamed, Abdel Waly Abdel Waly Abdalah","doi":"10.3968/10614","DOIUrl":"https://doi.org/10.3968/10614","url":null,"abstract":"Depletion performance of combination drive oil reservoirs is highly influenced by changes in reservoir rock and fluid data, relative permeability data, and PVT data of reservoir. Therefore, future prediction of combination drive oil reservoirs is difficult due to the long terms, huge equations and the sensitivity of data especially the PVT data and relative permeability data. In this paper, an integrated analytical model was developed to simulate the combination drive oil reservoir’s performance. It couples the general material balance equation with equations for water influx, water-invaded pore volume, gas-invaded pore volume, oil and gas saturation, and fluid contacts for combination oil reservoirs. All these equations are merged and solved simultaneously with reservoir depletion stages. A comparison with the various equations’ results for the integrated model has been developed so that it can be utilized in history match mode. This is used to estimate fluid saturation distribution after water influx and gas-cap invasion, original fluids in place, aquifer parameters and type, fluid contact levels, and effective recovery factor during gas and water aquifer movement towards the productive hydrocarbon zone in all reservoir depletion stages. The developed model has been validated using published cases for various oil reservoirs’ conditions, resulting in a good match between published case results and developed model results for these reservoirs. After validating the model, it has been used for two Egyptian combination drive fields. The field production history has been matched and future production performance for these reservoirs was simulated. Finally, the developed model also has the capability to predict reservoir performance for another Egyptian combination drive oil reservoir field under water and or gas injection, integrated with decline curve analysis.","PeriodicalId":313367,"journal":{"name":"Advances in Petroleum Exploration and Development","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126397486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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